70s Jagger's sexually ambiguous rock sound (6)

I believe the answer is:
bianca
'sound' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for bianca that I've seen before include "Kate's sister (Shrew)" , "Cassio's lover (Othello); Katharina's sister (Shrew)" , "Woman" , "Female role in The Taming of the Shrew" , "Katherina's sister (Taming of the Shrew)" .)
